EP3317559A1 - Amortisseur de vibrations hydraulique - Google Patents

Amortisseur de vibrations hydraulique

Info

Publication number
EP3317559A1
EP3317559A1 EP16729250.7A EP16729250A EP3317559A1 EP 3317559 A1 EP3317559 A1 EP 3317559A1 EP 16729250 A EP16729250 A EP 16729250A EP 3317559 A1 EP3317559 A1 EP 3317559A1
Authority
EP
European Patent Office
Prior art keywords
piston
valve
working chamber
inner tube
vibration damper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16729250.7A
Other languages
German (de)
English (en)
Other versions
EP3317559B1 (fr
Inventor
Stephan Wahl
Marco Schreiner
Jan-Rickmer Schlegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP3317559A1 publication Critical patent/EP3317559A1/fr
Application granted granted Critical
Publication of EP3317559B1 publication Critical patent/EP3317559B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/466—Throttling control, i.e. regulation of flow passage geometry
    • F16F9/469—Valves incorporated in the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/062—Bi-tubular units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/185—Bitubular units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3214—Constructional features of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/368—Sealings in pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/38—Covers for protection or appearance

Definitions

  • the invention relates to a hydraulic vibration damper comprising a container, an inner tube, which is arranged in the container, a piston, which is arranged axially movable in the inner tube and divides its interior into a first working chamber and a second working chamber, a sealing element. about the piston against the
  • Inner tube abuts to seal the first and second working chamber against each other, an electrically controllable valve for connecting the first and second working chamber, which is arranged on the piston, and a bottom valve, which is arranged at an axial end portion of the inner tube to the second working chamber with to connect a compensation space formed between the container and the inner tube.
  • Hydraulic vibration dampers are used, for example, in wheel suspensions of
  • controllable valve on the piston of the vibration damper can be the
  • Damping behavior of such a vibration damper in the tensile and compressive influence by the overflow behavior of a located in the inner tube damper medium between the working chambers is changed by means of the electrically controllable valve.
  • a hydraulic vibration damper of the type mentioned is known for example from DE 100 20 778 A1.
  • the invention is based on the object, a particularly compact semi-active
  • the support base of the damper i. the minimum distance I between the sealing element on the piston and the guide bush of the piston rod guide increases.
  • the component strength is increased, in particular with regard to the transmission of braking and lateral forces between the piston valve and the inner tube.
  • the piston may have a ring portion which is in the said
  • sealing element comprises at least one sealing ring, which is arranged on the outer circumference of the ring portion.
  • the piston on its facing the bottom valve end face on a lid, wherein the sealing element is arranged on the lid.
  • the piston may comprise a valve housing, which accommodates the electrically controllable valve, wherein the lid is attached to the valve housing. Since that
  • Sealing element is fixed to the lid, structures for receiving the
  • valve housing can be designed with a small wall thickness, so that more space is available radially for the electrically controllable valve. In addition, its production is simplified.
  • sealing element and the electrically controllable valve are arranged spaced apart in the axial direction.
  • the electrically controllable valve can furthermore be fixed by means of the cover in the valve housing.
  • the lid in the front side is fixed by means of the cover in the valve housing.
  • the piston has a
  • Valve unit with the electrically controllable valve on is fastened by means of the cover to a piston rod, resulting in a particularly simple assembly process.
  • Figure 1 shows a hydraulic vibration damper according to an embodiment of the
  • FIG. 2 is a detail view of the piston of the hydraulic vibration damper according to
  • Figure 3 shows a modification of the piston.
  • Vibration damper 1 the example as a twin-tube damper for a
  • Vehicle wheel suspension is formed.
  • the vibration damper 1 comprises a preferably tubular-shaped container 2, in which an inner tube 3 is inserted.
  • the inner tube 3 is cylindrical and closed at its lower end.
  • a piston rod 4 extends with a guided on the inner wall of the inner tube 3 and sealing against these piston.
  • the piston 5 divides a working space within the inner tube 3 into a first working chamber 6 and a second working chamber 7 which are each filled with a damping medium such as a hydraulic oil.
  • the inner tube 3 is closed by a piston rod guide 8, which is supported on an upper end face of the inner tube 3.
  • the piston rod guide 8 has an opening for the piston rod 4.
  • Piston rod guide 8 a sliding seal also not shown provided.
  • the lower second working chamber 7 is closed axially by a bottom valve 10, which is attached to the lower end face of the inner tube 3, resulting in a particularly slender
  • a compensation chamber 9 is formed, which communicates via the bottom valve 10 with the second working chamber 7 in connection. Above the bottom valve 10, in particular, the volume change caused by the piston rod 4 in the interior of the inner tube 3 is compensated.
  • rebound is understood as meaning a state in which the
  • Piston rod 4 is moved with the piston 5 in the direction of the inner tube 3 out. In this case, the pressure in the first working chamber 6 increases, while the pressure in the second
  • Working chamber 7 drops.
  • the pressure level is characterized by an insertion of the piston rod 4 in the inner tube 3 with reverse pressure ratios.
  • controllable valve 1 1 may for example be designed as a switching and / or control valve for influencing the flow behavior of the damping medium. It preferably allows a pressure and / or flow control and can, for example, as
  • Proportional solenoid valve may be formed.
  • the piston 5 is supported via a sealing element 12 on the inner tube 3 and is axially slidably guided over this sealing element 12 on the inner wall of the inner tube 3.
  • the bottom valve 10 projects axially into the second working chamber 7 with a section 13.
  • This section 13 is in the radial direction of
  • the piston 5 has a ring portion 15, which in the operating position shown in FIG. 2 in a bottom valve 10 radially surrounding portion of the second
  • Working chamber 7 protrudes at least.
  • the sealing element 12, which comprises at least one sealing ring, is arranged on the outer circumference of the annular section 15, which surrounds the central recess 14.
  • the piston 5 has a valve housing 16 for receiving the electrically controllable valve 1 1 and a lid 17.
  • the cover 17 is arranged on the facing to the bottom valve 10 end face of the piston 5.
  • the electrically controllable valve 1 1 may be defined in the valve housing 16.
  • the sealing member 12 is seated only on the cover 17. Since the sealing member 12 is axially spaced from the electrically controllable valve 1 1, the valve housing 17 can be made thin-walled and is not limited radially by the space required for the sealing member 12.
  • the valve housing 17 can therefore be designed as an externally substantially cylindrical body, the outer diameter of which is only slightly smaller than the inner diameter of the inner tube 3, so that an annular gap remains between them.
  • the cover 17 may be screwed into the front side of the valve housing 17 and for this purpose has an externally threaded portion 18 which is provided with an internally threaded portion 19 on
  • Valve housing 16 is engaged. However, another way of attachment can be provided here.
  • the design of the piston 5 is not limited to the embodiment shown in Fig. 2.
  • the cover 17 and the valve housing 1 1 can also be combined into one unit.
  • Fig. 3 shows a further modification.
  • the valve unit 19 ' is fastened to the piston rod 4 by means of the cover 17'.
  • the piston rod 4 can extend through the valve unit 20 'in this case.
  • the lid 17 ' may for example be bolted to the piston rod 4, but also be attached to the same in another way.
  • the arrangement of the lid 17 'together with the sealing element 12 with respect to the bottom valve 10 corresponds to the embodiment according to FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un amortisseur de vibrations hydraulique (1) comportant un contenant (2), un tube intérieur (3), qui est agencé dans le contenant (2), un piston (5), qui est agencé dans le tube intérieur (2) de manière à pouvoir se déplacer axialement et dont l'espace intérieur est divisé en une première chambre de travail (6) et en une deuxième chambre de travail (7), un élément d'étanchéité (12), par l'intermédiaire duquel le piston (5) repose contre le tube intérieur (3), afin d'étanchéifier la première et la deuxième chambre de travail (6, 7) l'une par rapport à l'autre, une soupape (11) à commande électrique destinée à relier la première et la deuxième chambre de travail (6, 7), qui est agencée sur le piston (5), et une soupape de fond (10), qui est agencée sur une partie d'extrémité axiale du tube intérieur (3), afin de relier la deuxième chambre de travail (7) à un espace de compensation (9) formé entre le contenant (2) et le tube intérieur (3). La soupape de fond (10) fait saillie par une partie (13) de manière axiale dans la deuxième chambre de travail (7). Le piston (5) comprend une position de fonctionnement, dans laquelle il entoure radialement la partie (13), faisant saillie dans la deuxième chambre de travail (7), de la soupape de fond (10), l'élément d'étanchéité (12) étant situé, dans cette position de fonctionnement, à hauteur de la soupape de fond (10).
EP16729250.7A 2015-07-02 2016-06-13 Amortisseur de vibration hydraulique Active EP3317559B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212404.5A DE102015212404A1 (de) 2015-07-02 2015-07-02 Hydraulischer Schwingungsdämpfer
PCT/EP2016/063450 WO2017001174A1 (fr) 2015-07-02 2016-06-13 Amortisseur de vibrations hydraulique

Publications (2)

Publication Number Publication Date
EP3317559A1 true EP3317559A1 (fr) 2018-05-09
EP3317559B1 EP3317559B1 (fr) 2019-06-12

Family

ID=56131523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16729250.7A Active EP3317559B1 (fr) 2015-07-02 2016-06-13 Amortisseur de vibration hydraulique

Country Status (6)

Country Link
US (1) US10302169B2 (fr)
EP (1) EP3317559B1 (fr)
CN (1) CN107923471B (fr)
DE (1) DE102015212404A1 (fr)
ES (1) ES2742813T3 (fr)
WO (1) WO2017001174A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111503208B (zh) * 2020-06-01 2021-03-19 东风汽车集团有限公司 一种机械式自适应减振器
DE102020210538A1 (de) 2020-08-19 2022-02-24 Thyssenkrupp Ag Schwingungsdämpfer und ein Dämpferrohr für einen Schwingungsdämpfer

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894965C (de) * 1943-10-21 1953-10-29 Hemscheidt Maschf Hermann Schwingungsdaempfer, Stabilisatoren oder aehnliche zwischen einer gefederten und einer ungefederten Masse eingeschaltete hydraulische Vorrichtungen, insbesondere fuer Fahrzeuge
FR1136853A (fr) * 1954-12-16 1957-05-21 Gabriel Co Amortisseur de chocs
US3036669A (en) * 1959-11-27 1962-05-29 Gen Motors Corp Hydraulic shock absorber with compression cut-off
US3086622A (en) * 1961-03-13 1963-04-23 Gen Motors Corp Hydraulic shock absorber with compression stop and hydraulic lock
DE2847729A1 (de) * 1978-11-03 1980-05-14 Stabilus Gmbh Gasfeder mit aenderbarer ausschubkraft bei eingefahrener kolbenstange
DE3406976A1 (de) * 1984-02-25 1985-09-12 Daimler-Benz Ag, 7000 Stuttgart Schwingungsdaempfer
DE3611288C2 (de) 1986-04-04 1996-09-19 Fichtel & Sachs Ag Kolben für einen Zweirohrschwingungsdämpfer
JPH01172648A (ja) * 1987-12-28 1989-07-07 Toyota Motor Corp ショックアブソーバ
DE4016807A1 (de) 1989-07-21 1991-01-24 Boge Ag Regelbarer schwingungsdaempfer
US5234084A (en) * 1992-07-31 1993-08-10 Gabriel Ride Control Products, Inc. Shock absorber
GB2287770B (en) * 1994-03-21 1997-11-26 Monroe Auto Equipment Co Piston post for a damper
DE19523397C1 (de) 1995-06-28 1996-08-14 Fichtel & Sachs Ag Kolben mit richtungsabhängigen Voröffnungsquerschnitten
US5878850A (en) * 1996-12-16 1999-03-09 General Motors Corporation Bi-directional pressure control valved damper
DE19847343A1 (de) 1998-10-14 2000-04-20 Gkn Sinter Metals Holding Gmbh Kolben mit druckabhängiger Dichtwirkung für eine Kolben-Zylinder-Anordnung, insbesondere Stoßdämpferkolben
DE19953372A1 (de) * 1999-02-10 2000-08-17 Sachs Race Eng Gmbh Schwingungsdämpfer mit verstellbarer Dämpfkraft
DE10020778B4 (de) 1999-04-28 2005-01-13 Tokico Ltd., Kawasaki Hydraulischer Stossdämpfer mit Dämpfungskraftregelung
AU2002327039A1 (en) * 2001-09-24 2003-04-07 Gabriel Ride Control Products, Inc. Shock absorber having a pressurized gas compartment
US7004293B2 (en) * 2003-09-25 2006-02-28 Tenneco Automotive Operating Company Inc. Thermal expansion compensation shock absorber
DE102009038818A1 (de) * 2009-08-25 2011-03-03 Thyssenkrupp Bilstein Suspension Gmbh Kraftfahrzeugstoßdämpfer
DE112012002999T5 (de) * 2011-07-17 2014-06-12 Honda Motor Co., Ltd. Dämpfer mit variabler Dämpfungskraft

Also Published As

Publication number Publication date
US10302169B2 (en) 2019-05-28
CN107923471B (zh) 2020-04-24
ES2742813T3 (es) 2020-02-17
US20180119769A1 (en) 2018-05-03
DE102015212404A1 (de) 2017-01-05
EP3317559B1 (fr) 2019-06-12
CN107923471A (zh) 2018-04-17
WO2017001174A1 (fr) 2017-01-05

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